Group work S1-4 Flashcards

1
Q

Which structures detect muscle stretch when tendon hammer applied

A

Stretch receptor

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2
Q

Which spinal level illicit knee jerk

A

L3

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3
Q

What is Jacksonian march

A

e.g. seizure starts in left hand and moved proximally through upper limb-

Follows topographical homunculus of brain, signal ‘marches’ along motor cortex lateral to medial

Opposite side of brain

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4
Q

Where is this tumour and what weighting is the image

A

T1 because CSF black, tumour in frontal lobe. Meningeal tumour- probably dura

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5
Q

What does a contrast enhancing lesion mean

A

tumour disrupted BBB

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6
Q

What is ataxia

A

loss of coordination

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7
Q

What is Aphasia

A

decreased language and spee4chb

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8
Q

Akinesia

A

absences of movement

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9
Q

Dysarthria

A

unclear speech

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10
Q

Chorea

A

abnormal involuntary movement

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11
Q

Why is maternal alpha fetoprotein raised in maternal blood in neural tube defects

A

Leaks out into amniotic fluid if severe defect in CNS

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12
Q

Why is dietary history important for inflammation of spinal cord

A

Vit B12 deficiency- comes from meat, required for CNS (alcoholics too)

Megaloblastic anaemia

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13
Q

Bilateral symptoms of spinothalamic system suggests

A

Syrinx- lesion in ventral white commissure where they cross, susceptible to damage

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14
Q

Why are there no signs below level in syrinx

A

only impacts decussation, not spinothalamic tract

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15
Q

why does someone with albinism find it hard to see in bright light

A

no pigmented layer, XS glare

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16
Q

Common causes of perception of XS glare

A

cataracts
macular degeneration

17
Q

How can you determine where a homonymous hemianopia is in optic tract or visual cortex

A

visual cortex = could have macular sparing

18
Q

New plaque in brainstem interfering with conjugate eye movements

A

Occulomotor, medial longitudinal fasciculus (connects many CNS, EDW) for conjugate eye movements